Unit 2
What property was used for step 2?
x (5 + 2) +15 = 4x + 9
5x + 2x +15 = 4x + 9
Distributive Property
Which of the following sets represents all integers that are at least 7 and less than 13?
A. {8, 9,10,11,12,13}
B. {7, 8, 9,10,11,12}
C. {7, 8, 9,10,11,12,13}
D. {8,9,10,11,12}
B. {7, 8, 9,10,11,12}
Which of the following points lies on the graph of the line y = 5x - 2 ?
A. (0,4)
B. (2,8)
C. (-1,2)
D. (4,10)
B. (2,8)
y = x + 7
y= 11- x
A. (-4, 7)
B. (1, 10)
C. (2, 9)
D. (5, 12)
C. (2, 9)
Which of the following is the solution to x/5 + 3=10?
A. 47
B. -1
C. 35
D. -5
C. 35
If f (x) =-2x2 +3 then f (-3) is?
A. -15
B. 21
C. 39
D. -18
A. -15
Which of the following is the slope of the line that passes through the points
(-3, 5) and (1,15) ?
A. 5
B. 5/2
D. 7/3
B. 5/2
Which of the following values of x solves the system shown below?
3x-2y=-19
2x+2y=-6
A. x= -25
B. x= 7
C. x= -3
D. x= -5
D. x= -5
When twice a number is subtracted from 11 the result is at most 7. Which of the following is true about the number described?
A) It must be at least 2.
B) It must be greater than 2.
C) It must be at most 2.
D It must be less than 2.
A) It must be at least 2.
Which of the following is the zero of the function f (x)=2x +14 ?
A. x = 6
B. x = -2
C. x = 14
D. x = -7
D. x = -7
The first two terms of an arithmetic sequence are 6 and 11, respectively. Which of the following represents the 14th term of the sequence?
A. 61
B. 66
C. 71
D. 76
C. 71
Solve the following system of equation using the method of substitution. Show the work that leads to your answer. (solve for x and y)
y=-2x-10
2x+5y=6
(-7,4)
The sum of a number, n, and a number 5 larger than it is 41. Which of the following equations could be used to solve for the number?
A. n +5n = 41
B. n+(n+5) = 41
C. 5(n+1) =41
D. x/2 + 1 = 7
B. n+(n+5) = 41
Which of the following intervals shown below represents the solution set to the inequality 25-3y ≤ 4 ?
A. [7, ∞)
B. (7, ∞)
C. (-∞, 7]
D. (-∞, 7)
A. [7, ∞)
If f (x)=| x -3|+ 7 , then what is the value of f (1) ?
9
Solve the following system by the method of elimination. Show work.
2x+5y= 5
3x+2y= -9
(-5,3)